against systemic reactions occurring during active immunotherapy by mechanisms still to be clarified.

It is tempting to speculate that anti-idiotypic antibodies could play a role because they are found in beekeepers' plasma and are involved in the regulation of IgE synthesis. METHODS: In this report we studied the effects of passive infusion of a beekeeper's plasma rich in anti-idiotypic antibodies to a patient who experienced systemic reactions to honeybee venom. RESULTS: We reported, during the days after the infusion, a decrease of clinical sensitivity to the honeybee venom. Indeed, the patient tolerated a cumulative dose of 280 micrograms of venom without adverse reactions. We also observed decreases in skin mast cell and in basophil sensitivity.

After the plasma infusion, a modified rush immunotherapy with honeybee venom was initiated in our patient. In the following 76 weeks, increased levels of anti-idiotypic antibodies in the serum of the patient were associated with a diminution of specific antibodies (IgG and IgE) to honeybee venom.  vitamin d3 benefits : These results suggest a dual role of anti-id in our combined protocol of passive and active immunotherapy: an immediate action on clinical sensitivity along with a decrease of skin mast cell and basophil sensitivity and an immunoregulatory role on Experimental Biology and Medicine (New York, N.Y.)Against Bordetella parapertussis Infection.symptomatology similar to that of pertussis but of underestimated incidence and with no specific vaccine existing. We recently designed a vaccine candidate from B.

parapertussis outer-membrane vesicles (OMVs) that proved to be safe and protective in a murine-infection model. Based on protection recently reported for the B. parapertussis O antigen in aqueous solution, we assessed here whether the B. parapertussis O-antigen-containing lipopolysaccharide (BppLPS-O(+)) embedded in the membranes, as present in B. parapertussis-derived OMVs (OMVs(Bpp-LPS-O(+))), was the component responsible for that previously observed protection by OMVs. By performing a comparative study with OMVs from a human strain with undetectable O antigen (OMVs(Bpp-LPS-O(-))), we demonstrated that the OMVs(Bpp-LPS-O(+)), but not the OMVs(Bpp-LPS-O(-)), protected mice against sublethal B. parapertussis infections.

Indeed, the B. parapertussis loads were significantly reduced in the lungs of OMVs(Bpp-LPS-O(+)) -vaccinated animals, with the CFUs recovered being decreased by 4 log units below those detected in the non-immunized animals or in the animals treated with the OMVs(Bpp-LPS-O(-)), (p < 0.001). We detected that the OMVs(Bpp-LPS-O(+)) induced IgG antibodies against B. parapertussis whole-cell lysates, which immunocomponents recognized, among others, the O antigen and accordingly conferred protection against B. parapertussis infection, as observed in in-vivo-passive-transfer experiments. Of interest was that the OMVs(Bpp-LPS-O(+)) -generated sera had opsonophagocytic and bactericidal capabilities that were not detected with the OMVs(Bpp-LPS-O(-))-induced sera, suggesting that those activities were involved in the clearance of B.

parapertussis. Though stimulation of cultured spleen cells from immunized mice with formulations containing the O antigen resulted in gamma interferon (IFN-γ) and interleukin-17 production, spleen cells from OMVs(Bpp-LPS-O(+)) -immunized mice did not significantly contribute to the observed protection against B. parapertussis infection. The protective capability of the B. parapertussis O antigen was also detected in formulations containing both the OMVs derived from B. pertussis and purified BppLPS-O(+). This combined formulation protected mice against B.

buy vitamin d3  with B. parapertussis.elderly nursing-home residents by the use of high-dose vaccines.immunoglobulin (sub) class distribution following influenza vaccination, antibody responses in 79 elderly nursing home residents were compared with the responses in 100 young subjects. At a 10 micrograms dose the IgM, IgG3 and IgA1 responses were comparable in both age groups, whereas the IgG, IgG1 and haemagglutination inhibition (HI) responses were twofold lower in the elderly. A 20 micrograms dose increased the IgG, IgG1 and HI levels in the elderly to the levels in the young and the IgA1 to significantly higher levels.